| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 26°F | 40°F | 32°F | 4.1" |
| February | 19°F | 38°F | 28°F | 2.9" |
| March | 29°F | 49°F | 39°F | 4.6" |
| April | 40°F | 63°F | 51°F | 6.6" |
| May | 47°F | 74°F | 61°F | 2.5" |
| June | 61°F | 84°F | 72°F | 9.0" |
| July | 64°F | 84°F | 74°F | 11.6" |
| August | 65°F | 84°F | 74°F | 4.1" |
| September | 57°F | 81°F | 69°F | 2.3" |
| October | 50°F | 69°F | 58°F | 8.8" |
| November | 34°F | 55°F | 44°F | 3.7" |
| December | 25°F | 40°F | 33°F | 5.2" |
| Index | Farmersville | Pennsylvania | National |
| Air quality index | 45 | 45 | 42 |
| Pollution index | 11,091,200 | 4,584,805 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 238 |
| Days with moderate air quality | 117 |
| Days w/ poor A.Q. for sensitive groups | 9 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.140% |
| Carbon Tetrachloride | 0.030% |
| Lead | 0.310% |
| Mercury | 0.004% |
| City | Population | Air Quality Index | National Avg. |
| Cornwall, PA | 4,319 | 42 | 16.0% |
| Gouglersville, PA | 493 | 42 | 16.0% |
| Reamstown, PA | 3,338 | 42 | 16.0% |
| Morgantown, PA | 1,541 | 42 | 16.0% |
| Reading, PA | 88,333 | 42 | 16.0% |
| Farmersville, PA | 958 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Hackett, AR | 958 | 36 | 28.0% |
| Chumuckla, FL | 958 | 41 | 18.0% |
| Van Horne, IA | 958 | 39 | 22.0% |
| Bellefonte, KY | 958 | 42 | 16.0% |
| Tioga, TX | 958 | 325 | 550.0% |
| Farmersville, PA | 958 | 45 | 10.0% |
Here are the best places to live in Pennsylvania
These are the 10 most affordable cities in Pennsylvania
Top 10 cities in Pennsylvania with the best education system
Check out the 10 safest cities in Pennsylvania